Best Way to Isolate Objects/Materials After Render

[dlparisi]

As for that script dlparisi kindly posted, am I correct in assuming that as you create your scene, it automatically generates a different objID # for each new object you create right?

But still, with multimatte, you only have 3 solid colors to choose from each time you render one pass?

Yeah it generates a new obj Id for each object, but it also sets a new Multimatte Element for each ID so you'll get a channel with each object in it.

[3sgteMKI]

Thanks for sharing that script dlparisi! I'm looking forward to the new version.

[frostfx]

I tried multimatte. What I'm understanding is that it will output 3 colors in total and black. So if there are more than 3 items you want to isolate, you would have to do more than one pass?


But still, with multimatte, you only have 3 solid colors to choose from each time you render one pass?

you can save out as many as you like with one render - just make sure to rename the channels otherwise youll write them over.


dlparisi - very cool. and thanks for posting it soon

[simmsimaging]

I tried multimatte. What I'm understanding is that it will output 3 colors in total and black. So if there are more than 3 items you want to isolate, you would have to do more than one pass?.....

..... But still, with multimatte, you only have 3 solid colors to choose from each time you render one pass?

True, but you can add multiple instances/copies of the Multimatte element to your render elements, and just change the 3 matID numbers (so one has 1,2,3, and the next has 4,5,6, an so on). That way you can have as many as you like and it renders in one pass.

[Laserschwert]

Regarding Multimatte: Why isn't there an option to use the Alpha-channel as well? That way you could use 4 channels per pass...

[vlado]

V-Ray can only store 3-channel render elements at present (even the alpha is stored as a RGB element internally since it is a color really, not just a number), so the multimatte cannot use the alpha.

Best regards,
Vlado

[dlparisi]

I've posted the new Multimatte generator script in a new thread at http://www.chaosgroup.com/forums/vbu...nerator-Script